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/*
* libjingle
* Copyright 2004--2012, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/xmpp/presencereceivetask.h"
#include "talk/base/stringencode.h"
#include "talk/xmpp/constants.h"
namespace buzz {
static bool IsUtf8FirstByte(int c) {
return (((c)&0x80)==0) || // is single byte
((unsigned char)((c)-0xc0)<0x3e); // or is lead byte
}
PresenceReceiveTask::PresenceReceiveTask(XmppTaskParentInterface* parent)
: XmppTask(parent, XmppEngine::HL_TYPE) {
}
PresenceReceiveTask::~PresenceReceiveTask() {
Stop();
}
int PresenceReceiveTask::ProcessStart() {
const XmlElement * stanza = NextStanza();
if (stanza == NULL) {
return STATE_BLOCKED;
}
Jid from(stanza->Attr(QN_FROM));
HandlePresence(from, stanza);
return STATE_START;
}
bool PresenceReceiveTask::HandleStanza(const XmlElement * stanza) {
// Verify that this is a presence stanze
if (stanza->Name() != QN_PRESENCE) {
return false; // not sure if this ever happens.
}
// Queue it up
QueueStanza(stanza);
return true;
}
void PresenceReceiveTask::HandlePresence(const Jid& from,
const XmlElement* stanza) {
if (stanza->Attr(QN_TYPE) == STR_ERROR) {
return;
}
PresenceStatus status;
DecodeStatus(from, stanza, &status);
PresenceUpdate(status);
}
void PresenceReceiveTask::DecodeStatus(const Jid& from,
const XmlElement* stanza,
PresenceStatus* presence_status) {
presence_status->set_jid(from);
if (stanza->Attr(QN_TYPE) == STR_UNAVAILABLE) {
presence_status->set_available(false);
} else {
presence_status->set_available(true);
const XmlElement * status_elem = stanza->FirstNamed(QN_STATUS);
if (status_elem != NULL) {
presence_status->set_status(status_elem->BodyText());
// Truncate status messages longer than 300 bytes
if (presence_status->status().length() > 300) {
size_t len = 300;
// Be careful not to split legal utf-8 chars in half
while (!IsUtf8FirstByte(presence_status->status()[len]) && len > 0) {
len -= 1;
}
std::string truncated(presence_status->status(), 0, len);
presence_status->set_status(truncated);
}
}
const XmlElement * priority = stanza->FirstNamed(QN_PRIORITY);
if (priority != NULL) {
int pri;
if (talk_base::FromString(priority->BodyText(), &pri)) {
presence_status->set_priority(pri);
}
}
const XmlElement * show = stanza->FirstNamed(QN_SHOW);
if (show == NULL || show->FirstChild() == NULL) {
presence_status->set_show(PresenceStatus::SHOW_ONLINE);
} else if (show->BodyText() == "away") {
presence_status->set_show(PresenceStatus::SHOW_AWAY);
} else if (show->BodyText() == "xa") {
presence_status->set_show(PresenceStatus::SHOW_XA);
} else if (show->BodyText() == "dnd") {
presence_status->set_show(PresenceStatus::SHOW_DND);
} else if (show->BodyText() == "chat") {
presence_status->set_show(PresenceStatus::SHOW_CHAT);
} else {
presence_status->set_show(PresenceStatus::SHOW_ONLINE);
}
const XmlElement * caps = stanza->FirstNamed(QN_CAPS_C);
if (caps != NULL) {
std::string node = caps->Attr(QN_NODE);
std::string ver = caps->Attr(QN_VER);
std::string exts = caps->Attr(QN_EXT);
presence_status->set_know_capabilities(true);
presence_status->set_caps_node(node);
presence_status->set_version(ver);
}
const XmlElement* delay = stanza->FirstNamed(kQnDelayX);
if (delay != NULL) {
// Ideally we would parse this according to the Psuedo ISO-8601 rules
// that are laid out in JEP-0082:
// http://www.jabber.org/jeps/jep-0082.html
std::string stamp = delay->Attr(kQnStamp);
presence_status->set_sent_time(stamp);
}
const XmlElement* nick = stanza->FirstNamed(QN_NICKNAME);
if (nick) {
presence_status->set_nick(nick->BodyText());
}
}
}
} // namespace buzz
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